I still have my ZX-81 sitting here in the shack!
On Tue, Feb 11, 2020 at 07:56:57AM +0100, Thomas Beierlein wrote:
> Am Mon, 10 Feb 2020 21:28:18 +0100
> schrieb Csahok Zoltan <ha5...@freemail.hu>:
>
> > While working on improving the handling of WWV messages
> > I did some digital archeology and found that the propagation
> > display (Ctrl-P) is a straight port of MICROMUF.PAS, a MUF/LUF tool
> > from the 80s. It was originally written in Basic then translated
> > to Pascal. Here one can still find both:
> > Xs://archives.scovetta.com/pub/simtelnet/msdos/hamradio/
> > (replace X with http. I'm unable to post mails with links...)
> >
> > I suggest to include the original credits to our source.
>
> Good idea. As you have the details can you please provide a proposal
> for it.
>
> >
> > The Pascal version compiles on a 3.7 MHz Z-80 board in 8 seconds
> > and drawing the chart takes ~45 seconds. Not that what you'd want
> > to do during a contest. Those were different days...
> >
> I myself started with an 2MHZ Z-80 homemade system with 2 kB ROM and 2kB
> RAM doing assembly by hand. What times....
>
> 73, de Tom
>
> > For those interested in seeing CP/M and Turbo Pascal 3.01A in action
> > here is a 2 min screen recording:
> > X://ha5cqz.info.tm/Screencast_micromuf.mp4
> > At the end I swithed to TLF's Ctrl-P screen with the same settings
> > for comparison.
> >
> > This page gives a good review of propagation prediction programs
> > X://www.astrosurf.com/luxorion/qsl-review-propagation-software-dos.htm
> >
> >
> > 73,
> > Zoli
> >
> >
>
>
>
> --
> "Do what is needful!"
> Ursula LeGuin: Earthsea
> --
>
>
